306 lines
9.6 KiB
C
306 lines
9.6 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#ifndef EFI_H
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#define EFI_H
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/**
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* \file
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*
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* Provides definitions for accessing the UEFI boot services and configuration
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* tables.
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*
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*//*
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* Copyright (C) 2020-2022 Martin Whitaker.
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*/
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#include <stdint.h>
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#ifdef __x86_64__
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#define NATIVE_MSB UINT64_C(0x8000000000000000)
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#else
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#define NATIVE_MSB 0x80000000
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#endif
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/**
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* EFI_STATUS values.
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*/
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#define EFI_SUCCESS 0
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#define EFI_INVALID_PARAMETER (NATIVE_MSB | 2)
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#define EFI_UNSUPPORTED (NATIVE_MSB | 3)
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#define EFI_BUFFER_TOO_SMALL (NATIVE_MSB | 5)
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#define EFI_NOT_READY (NATIVE_MSB | 6)
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#define EFI_NOT_FOUND (NATIVE_MSB | 14)
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#define EFI_ABORTED (NATIVE_MSB | 21)
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/**
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* EFI_LOCATE_SEARCH_TYPE values.
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*/
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#define EFI_LOCATE_BY_PROTOCOL 2
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/**
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* EFI_ALLOCATE_TYPE values.
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*/
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#define EFI_ALLOCATE_MAX_ADDRESS 1
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#define EFI_ALLOCATE_ADDRESS 2
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/**
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* EFI_MEMORY_TYPE values.
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*/
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#define EFI_LOADER_CODE 1
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#define EFI_LOADER_DATA 2
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#define EFI_BOOT_SERVICES_CODE 3
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#define EFI_BOOT_SERVICES_DATA 4
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#define EFI_CONVENTIONAL_MEMORY 7
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#define EFI_ACPI_RECLAIM_MEMORY 9
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/**
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* EFI_RESET_TYPE values.
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*/
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#define EFI_RESET_COLD 0
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#define EFI_RESET_WARM 1
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#define EFI_RESET_SHUTDOWN 2
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/**
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* EFI_GRAPHICS_PIXEL_FORMAT values.
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*/
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#define PIXEL_RGB_RESERVED_8BIT_PER_COLOR 0
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#define PIXEL_BGR_RESERVED_8BIT_PER_COLOR 1
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#define PIXEL_BIT_MASK 2
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#define PIXEL_BLT_ONLY 3
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#define EFI_SYSTEM_TABLE_SIGNATURE UINT64_C(0x5453595320494249)
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#define EFI_RUNTIME_SERVICES_SIGNATURE UINT64_C(0x5652453544e5552)
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#define efiapi __attribute__((ms_abi))
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#ifdef __x86_64__
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typedef uint64_t uintn_t;
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#else
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typedef uint32_t uintn_t;
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#endif
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typedef void * efi_handle_t;
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typedef uintn_t efi_status_t;
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typedef uint64_t efi_phys_addr_t;
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typedef uint64_t efi_virt_addr_t;
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typedef uint16_t efi_char16_t;
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typedef struct {
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uint32_t a;
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uint16_t b;
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uint16_t c;
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uint8_t d[8];
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} efi_guid_t;
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typedef struct {
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uint32_t type;
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uint32_t pad;
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efi_phys_addr_t phys_addr;
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efi_virt_addr_t virt_addr;
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uint64_t num_pages;
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uint64_t attribute;
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} efi_memory_desc_t;
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typedef struct {
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uint32_t red_mask;
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uint32_t green_mask;
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uint32_t blue_mask;
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uint32_t rsvd_mask;
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} efi_pixel_bitmask_t;
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typedef struct {
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uint32_t version;
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uint32_t h_resolution;
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uint32_t v_resolution;
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int pixel_format;
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efi_pixel_bitmask_t pixel_info;
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uint32_t pixels_per_scan_line;
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} efi_gop_mode_info_t;
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typedef struct {
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uint32_t max_mode;
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uint32_t mode;
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efi_gop_mode_info_t *info;
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uintn_t info_size;
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efi_phys_addr_t frame_buffer_base;
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uintn_t frame_buffer_size;
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} efi_gop_mode_t;
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typedef struct efi_graphics_output_s {
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efi_status_t (efiapi *query_mode)(struct efi_graphics_output_s *, uint32_t, uintn_t *, efi_gop_mode_info_t **);
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efi_status_t (efiapi *set_mode)(struct efi_graphics_output_s *, uint32_t);
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void *blt;
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efi_gop_mode_t *mode;
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} efi_graphics_output_t;
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typedef struct {
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uint64_t signature;
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uint32_t revision;
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uint32_t header_size;
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uint32_t crc32;
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uint32_t reserved;
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} efi_table_header_t;
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typedef struct {
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uint16_t scan_code;
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efi_char16_t ch;
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} efi_input_key_t;
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typedef struct efi_simple_text_in_s {
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void *reset;
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efi_status_t (efiapi *read_key_stroke)(struct efi_simple_text_in_s *, efi_input_key_t *);
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void *test_string;
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} efi_simple_text_in_t;
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typedef struct efi_simple_text_out_s {
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void *reset;
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efi_status_t (efiapi *output_string)(struct efi_simple_text_out_s *, efi_char16_t *);
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void *test_string;
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} efi_simple_text_out_t;
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typedef struct {
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efi_table_header_t header;
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void *raise_tpl;
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void *restore_tpl;
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efi_status_t (efiapi *allocate_pages)(int, int, uintn_t, efi_phys_addr_t *);
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efi_status_t (efiapi *free_pages)(efi_phys_addr_t, uintn_t);
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efi_status_t (efiapi *get_memory_map)(uintn_t *, void *, uintn_t *, uintn_t *, uint32_t *);
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efi_status_t (efiapi *allocate_pool)(int, uintn_t, void **);
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efi_status_t (efiapi *free_pool)(void *);
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void *create_event;
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void *set_timer;
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void *wait_for_event;
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void *signal_event;
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void *close_event;
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void *check_event;
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void *install_protocol_interface;
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void *reinstall_protocol_interface;
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void *uninstall_protocol_interface;
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efi_status_t (efiapi *handle_protocol)(efi_handle_t, efi_guid_t *, void **);
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void *reserved;
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void *register_protocol_notify;
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efi_status_t (efiapi *locate_handle)(int, efi_guid_t *, void *, uintn_t *, efi_handle_t *);
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void *locate_device_path;
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efi_status_t (efiapi *install_configuration_table)(efi_guid_t *, void *);
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void *load_image;
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void *start_image;
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void *exit;
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void *unload_image;
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efi_status_t (efiapi *exit_boot_services)(efi_handle_t, uintn_t);
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void *get_next_monotonic_count;
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void *stall;
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void *set_watchdog_timer;
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void *connect_controller;
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efi_status_t (efiapi *disconnect_controller)(efi_handle_t, efi_handle_t, efi_handle_t);
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void *open_protocol;
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void *close_protocol;
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void *open_protocol_information;
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void *protocols_per_handle;
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void *locate_handle_buffer;
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efi_status_t (efiapi *locate_protocol)(efi_guid_t *, void *, void **);
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void *install_multiple_protocol_interfaces;
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void *uninstall_multiple_protocol_interfaces;
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void *calculate_crc32;
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void *copy_mem;
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void *set_mem;
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void *create_event_ex;
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} efi_boot_services_t;
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typedef struct {
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efi_table_header_t header;
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unsigned long get_time;
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unsigned long set_time;
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unsigned long get_wakeup_time;
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unsigned long set_wakeup_time;
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unsigned long set_virtual_address_map;
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unsigned long convert_pointer;
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unsigned long get_variable;
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unsigned long get_next_variable;
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unsigned long set_variable;
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unsigned long get_next_high_mono_count;
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efi_status_t (efiapi *reset_system)(int, int, int);
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unsigned long update_capsule;
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unsigned long query_capsule_caps;
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unsigned long query_variable_info;
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} efi_runtime_services_t;
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typedef struct {
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efi_guid_t guid;
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uint32_t table;
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} efi32_config_table_t;
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typedef struct {
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efi_guid_t guid;
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uint64_t table;
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} efi64_config_table_t;
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typedef struct {
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efi_guid_t guid;
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void *table;
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} efi_config_table_t;
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typedef struct {
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efi_table_header_t header;
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uint32_t fw_vendor;
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uint32_t fw_revision;
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uint32_t con_in_handle;
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uint32_t con_in;
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uint32_t con_out_handle;
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uint32_t con_out;
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uint32_t std_err_handle;
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uint32_t std_err;
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uint32_t runtime_services;
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uint32_t boot_services;
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uint32_t num_config_tables;
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uint32_t config_tables;
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} efi32_system_table_t;
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typedef struct {
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efi_table_header_t header;
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uint64_t fw_vendor;
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uint32_t fw_revision;
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uint32_t pad;
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uint64_t con_in_handle;
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uint64_t con_in;
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uint64_t con_out_handle;
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uint64_t con_out;
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uint64_t std_err_handle;
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uint64_t std_err;
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uint64_t runtime_services;
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uint64_t boot_services;
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uint64_t num_config_tables;
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uint64_t config_tables;
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} efi64_system_table_t;
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typedef struct {
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efi_table_header_t header;
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efi_char16_t *fw_vendor;
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uint32_t fw_revision;
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efi_handle_t con_in_handle;
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efi_simple_text_in_t *con_in;
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efi_handle_t con_out_handle;
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efi_simple_text_out_t *con_out;
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efi_handle_t std_err_handle;
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efi_simple_text_out_t *std_err;
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efi_runtime_services_t *runtime_services;
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efi_boot_services_t *boot_services;
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uintn_t num_config_tables;
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efi_config_table_t *config_tables;
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} efi_system_table_t;
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typedef struct {
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uint32_t revision;
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efi_handle_t parent_handle;
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efi_system_table_t *system_table;
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efi_handle_t device_handle;
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void *file_path;
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void *reserved;
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uint32_t load_options_size;
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void *load_options;
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void *image_base;
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uint64_t image_size;
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int image_code_type;
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int image_data_type;
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void *unload;
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} efi_loaded_image_t;
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#endif /* EFI_H */
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